Amorphous polymers
Coupled temperature and strain rate effects on non-linear mechanical behaviour of amorphous polymers : Experimental characterisation and modelling of strain rate-temperature superposition
... In the literature, it is possible to find many works devoted to describe the mechanical behaviour of amorphous polymers. In this work, we chose the approach proposed by Billon [11] and then extended by ...
185
Dielectric relaxations in amorphous polymers with complex chain architectures
... relaxation process observed at ÿ100 °C [11]. From 180 °C, a large increase of the depolarization current is noted, corresponding to a conductivity phenomenon, independent from the relaxation process. The FP method is ...
10
Dielectric relaxations in amorphous polymers with complex chain architectures
... complex amorphous macromolecules is described through the study of biopolymers like ...model amorphous linear polymers to investigate complex relaxation processes in the glass transition and upper ...
9
Atomistic simulations of elastic-plastic deformation of amorphous polymers
... The trend of an increasing number of transitions per unit of deformation as the tempera- ture is increased or the strain rate is decreased might be an artifact of the f[r] ...
125
A viscoelastic-viscoplastic-damage constitutive model based on a large strain hyperelastic formulation for amorphous glassy polymers
... Glassy polymers ABSTRACT The aim of this work is to develop an efficient large-strain hyperelastic constitutive model for amorphous polymers in the glassy ...of amorphous glassy ...
6
Role and properties of the confined amorphous phase of polymers
... into amorphous interlamellar layers [ 4 ...the amorphous phase after sample crystallization depends on the conditions of crystallization process and, therefore, can be modified in a certain ...inside ...
163
A Transmission electron microscopy study of the interaction betweeen defects in amorphous silicon and a moving crystalline amorphous interface
... 38 implanted state. Studies using calorimetry to investigate the defects in de- relaxed a-Si and highly damaged, ion-implanted c-Si found that the annealing behaviour was similar in both cases [40]. The highly damaged ...
220
Rheology of Polymers with Nanofillers
... MD simulations, suitable for predicting the viscosity and time-dependent shear modulus of PNC with nonentangled or weakly entangled polymers, are limited to systems that have only a few nanoparticles. Borodin et ...
71
A depinning approach of amorphous plasticity and dewetting
... As it was revealed in [119] and is shown on Figure 4.26, the short quadrupolar kernel features localization, the emerging shear bands are however short, and by no means they percolate through the system. On the other ...
216
Branched Polymers and Hyperplane Arrangements
... branched polymers in R 2 from [BI, KW] translates to polymers associated to the braid arrangement B n ...branched polymers, as well as branched polymers (where we do not require connectivity) ...
18
Time-dependent thermomechanical constitutive model for polymers based on network theory: application to thermoplastic polymers
... However ISVs strongly depend on the crystallinity of the material. Permanent nodes are more numerous in crystalline material whereas the entanglements are more active in the amorphous one, which was expected. The ...
3
Processes of deposition and testing of mechanical properties of polymers and metal coated polymers
... Wet chemical etching has been the most utilized fabrication method for microfluidic devices. The processes involved are well defined and geometries, although less than ideal, are indeed controllable. Wet etching can ...
146
Constitutive modeling of active polymers
... The constitutive theory developed and presented in the previous chapters has been utilized to explain and model conducting polymer actuators, with particular emphasis[r] ...
96
Molecular dynamics in electrospun amorphous plasticized polylactide fibers
... the amorphous phase of electrospun fibers of polylactide (PLA) has been investigated using the cooperative rearranging region ...the amorphous phase ...
12
Rejuvenation and shear banding in model amorphous solids
... of amorphous plasticity, starting from the early works by Argon and coworkers [ 44 ] to the most recent space-resolved models [ 24 ], postulate the existence of local thresholds that are reshuffled during plastic ...
11
Ageing and Durability of Organic Polymers
... As this reaction does not modify the macromolecular skeleton, there are no consequences on the polymer’s mechanical behavior. These examples aside, most industrial polymers do not present intrinsic photoreactivity ...
51
Nano- and Micromechanics of Crystalline Polymers
... detected. The interlamellar amorphous shear appears the primary deformation mechanism of -iPP. The other identified mechanism, -smectic phase transformation, plays rather a minor, supplementary role in the ...
73
Directed polymers and the KPZ equation
... On y trouvera dans ces notes de nombreuses r´ ef´ erences sur les mod` eles de cette classe, qui comprend notamment : certains syst` emes de particules en interactions (asymmetric simple[r] ...
181
Origin of the Bauschinger Effect in Amorphous Solids
... This work has shown that strain induces a history- dependent polarization of local yield thresholds in an amorphous solid under AQS shear. The Bauschinger ef- fect then appears to arise because the ...
9
Controlled Rejuvenation of Amorphous Metals with Thermal Processing
... Figure 3 shows a schematic of the energy/volume change during the initial melt-quenching (A→D) and subsequent thermal loading processes (D→G). (1) If the annealing temperature T a is much higher than T c ( T a T c ), ...
9